Butt segment of a shingle



FIG. 1 is a front view of a butt segment of a shingle showing my new design;

FIGS. 2 through 12 are front views of modified forms of the butt segment of a shingle shown in FIG. 1; and,

FIG. 13 is an end view thereof.

The rear of the butt segment of the shingle not shown is plain and unornamented. The broken lines showing of the headlap segment of the shingle is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a butt segment of a shingle, as shown and described. 